Hydrogen fluoride is a liquid that boils at 20 °C wat accounts for this relative
ID: 715100 • Letter: H
Question
Hydrogen fluoride is a liquid that boils at 20 °C wat accounts for this relatively high boiling point? Select one a. Strong hydrogen bonds O b Low molecular weight O c. Small size of the fluorine atom d. Hydrofluoric acid is a weak acid The perbromate ion was first synthesized in 1965 by oxidizing the bromate ion with aqueous xenon difluoride. The products of this reaction are xenon gas, hydrofluoric acid, and the perbromate ion. Select the correctly balanced equation for this reaction: Select one: BrO-(aq) + Xe(g) + 2HF(ag)Explanation / Answer
Ans 1 : a) strong hydrogen bonds
The hydrogen bonds formed in between the hydrogen and fluoride atoms of adjacent molecules of HF require more amount of energy to get broken.
This is the reason that HF has naturally higher boiling point.
Ans 2 : b) H2O(l) + BrO3- (aq) + XeF2 (aq) = BrO4- (aq) + Xe (g) + 2HF (aq)
To get the equation right , we start by figurting out the correct formulas of the species involved in the reaction.
Then the equation is balanced by making the atoms on the left side of the equation equal to the ones on the right.
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